Available on SUN computers since the SUN3 series (1988) to the current UltraSparc systems
(RS423/RS232)
 (at the computer)
 (at the computer)
25 PIN D-SUB FEMALE at the computer.
| Pin | Name | Dir | Description | 
|---|---|---|---|
| 1 | n/c | - | |
| 2 | TXD |  | Transmit Data | 
| 3 | RXD |  | Receive Data | 
| 4 | RTS |  | Request to Send | 
| 5 | CTS |  | Clear to Send | 
| 6 | DSR |  | Data Set Ready | 
| 7 | GND | - | System Ground | 
| 8 | DCD |  | Data Carrier Detect | 
| 9 | n/c | - | |
| 10 | n/c | - | |
| 11 | n/c | - | |
| 12 | n/c | - | |
| 13 | n/c | - | |
| 14 | n/c | - | |
| 15 | TRxC |  | Transmit Clock | 
| 16 | n/c | - | |
| 17 | RTxC |  | Receive Clock | 
| 18 | n/c | - | |
| 19 | n/c | - | |
| 20 | DTR |  | Data Terminal Ready | 
| 21 | n/c | - | |
| 22 | n/c | - | |
| 23 | n/c | - | |
| 24 | TxC |  | Transmit Clock | 
| 25 | n/c | - | 
  Note: Direction is DTE (Computer) relative DCE (Modem).
| Contributor: | Joakim Ögren | 
| Source: | SUN SPARCengine Ultra 20 OEM Manual | 
  Copyright © The Hardware Book Team 1996-2004.
  May be copied and redistributed, partially or in whole, as appropriate.
  Document last modified: 2002-01-13